center console

jsx for your terminal

what

this will allow you to layout dynamic console output with an increasingly html complete api as i flesh out features

why

i wanted a simple way to control some output at work, but couldn't justify spending any real time on it.

install

yarn add center-console

jsx interface

thanks to babel and it's custom transform for jsx stuff, along with typescript support, we have been able to create a custom 'dom like' and 'react inspired' c-dom. Our render function relies on this 'createElement' function to build the children, and to use the fiber based dom processor.

import ConsoleRender from '..';
import Component from '../component';

const multiLine = `text
and
lines`;

const MultiDiv = ({ children } : {children: any}) : ConsoleDiv => <div alignContent="center" alignSelf='center' height={50}>
  {children}
</div>;

class StatefulSplash extends Component {
  interval?: NodeJS.Timer

  startTime: number

  constructor(...props) {
    super(...props);
    this.state = {
      date: 0,
    };
    this.startTime = Date.now();
    this.interval = setInterval(() => {
      this.setState({
        date: Date.now() - this.startTime,
      });
    }, 1000);
  }

  render() {
    const { date } = this.state;
    const runTime = `running for ${date}ms`;
    return <main>
      <div alignSelf='top' height={25}>
        <span alignContent="left" width={75} color='#2832c2' background='#ffff00'>logo</span>
        <span alignContent="right" width={25} background='#ffff00'>{runTime}</span>
      </div>
      <MultiDiv>{multiLine}</MultiDiv>
      <div alignSelf="bottom" height={25}>
        <span alignContent="left" width={33}>left</span>
        <span alignContent="center" width={33}>right</span>
        <span alignContent="right" width={33}>centers</span>
      </div>
    </main>;
  }
}

const someDom = new ConsoleRender();
someDom.display(<StatefulSplash />);

this will output this:

logo                                          running for 1000ms












                              text
                              and
                             lines












left                         right                      centers

babel config

to use this you gotta update your babel for use with custom jsx like this:

module.exports = {
  presets: ['@babel/env', '@babel/typescript'],
  plugins: [
    [
      '@babel/plugin-transform-react-jsx',
      {
        runtime: 'automatic',
        importSource: 'center-console/runtime',
      },
    ],
  ],
};

and make sure you make ts preserve jsx:

{
  "compilerOptions": {
    ... other options,
    "jsx": "preserve",
  }
}

jsx props

there are like 4 props we accept. please use the JSX export this package provides to see what is useable.

as of now you can basically break up the terminal into heights and widths by percent and control vertical/horizontal layouts.

color support

you can add color or background to any element and we will pass the value you supply to the chalk hex function. we support text and background colors.

old school api (still totally cool and very legal)

import

import { CenterConsole } from 'center-console';

const log = new CenterConsole();

log.render(`

hey

`);

there is a type export, refer to it cuz source code rarely gets out of sync with itself, idk about these docs.

prior art

c-dom based on a reworking for node of pombo diy react. not a whole hell of a lot of that applied, and it turns out that also having to build a dom sucked.

about the author

i like to write dev tools, this can make those tools "sparkle"

contributing

open pr, pass lint and commit style, merge